Trailer Light Help Needed

Trailer related issues and discussion goes here.
Post Reply
User avatar
JGibson
Posts: 237
Joined: 13 Jul 2012, 17:46
Location: East TN

Trailer Light Help Needed

Post by JGibson » 22 Jun 2018, 16:28

Tilt trailer.

I installed a new harness and lights on the trailer a couple of days ago and I was having trouble getting them to work. Figured out it was a harness problem so I hard wired the harness to the truck. Added a ground to the tilting portion of the trailer just to be safe. Now, I have brake and park lights but no blinkers. They blink real fast inside the truck but nothing outside the truck or the trailer. Any help would be greatly appreciated. I had planned to take the boat out this weekend but with no blinkers it's not safe. Sure I could use the old hand signals but I would like to get them fixed. Thanks
1979 Monark 1443, 1969 Johnson 18Hp Motor

RazorBaits
User avatar
New River Rat
Posts: 749
Joined: 10 Apr 2011, 06:19
Location: New River in Virginia
Contact:

Trailer Light Help Needed

Post by New River Rat » 22 Jun 2018, 16:41

Does it do this ONLY with the trailer hooked up?
My Tinny is a tool, a means to an end, if you will.

New River Smallies

Case Plastics Pro Staff

User avatar
JGibson
Posts: 237
Joined: 13 Jul 2012, 17:46
Location: East TN

Trailer Light Help Needed

Post by JGibson » 22 Jun 2018, 17:21

Yes. Truck works fine without the trailer.
1979 Monark 1443, 1969 Johnson 18Hp Motor

CedarRiverScooter
Posts: 845
Joined: 13 Nov 2014, 08:01

Trailer Light Help Needed

Post by CedarRiverScooter » 22 Jun 2018, 17:31

You most likely will need an adapter module, because the trailer shares brake light filament with turn signal & most modern cars/trucks do not.

Go to a good auto parts store & have them look up one that fits your truck.

In the meantime, if you can see truck's turn signal over the boat, I would chance it.

User avatar
JGibson
Posts: 237
Joined: 13 Jul 2012, 17:46
Location: East TN

Trailer Light Help Needed

Post by JGibson » 22 Jun 2018, 17:38

I drive a 1991 s10. My brake and turn signals are on the same wire. They are believe it or not, color coded on the truck the same way the harness is, brown for park lights, yellow for left turn/brake and green for right turn/brake.
1979 Monark 1443, 1969 Johnson 18Hp Motor

lckstckn2smknbrls
Posts: 4268
Joined: 05 Oct 2008, 12:14
Location: Algonquin Il

Trailer Light Help Needed

Post by lckstckn2smknbrls » 22 Jun 2018, 21:24

Try hooking up a different trailer and see if you still has the same issues.
1971 14' Ward's Sea King Jon Boat / 1983 Mariner 25HP

CedarRiverScooter
Posts: 845
Joined: 13 Nov 2014, 08:01

Trailer Light Help Needed

Post by CedarRiverScooter » 22 Jun 2018, 22:03

Years ago they had a 'heavy duty' flasher, which could handle the extra load of trailer bulbs. Maybe they still make those.

User avatar
LDUBS
Posts: 2190
Joined: 14 Aug 2016, 22:25
Location: Clayton California

Trailer Light Help Needed

Post by LDUBS » 22 Jun 2018, 23:21

Some vehicles require that you add a turn signal relay (they don't put them in unless you buy the tow package). Like the heavy duty flasher CedarRiver mentions. They are relatively inexpensive & just plug in. Google it for your vehicle or visit you local auto parts store for help.
Have Rod - Will Fish

User avatar
New River Rat
Posts: 749
Joined: 10 Apr 2011, 06:19
Location: New River in Virginia
Contact:

Trailer Light Help Needed

Post by New River Rat » 23 Jun 2018, 05:30

JGibson wrote:Yes. Truck works fine without the trailer.
CedarRiverScooter wrote:Years ago they had a 'heavy duty' flasher, which could handle the extra load of trailer bulbs. Maybe they still make those.
LDUBS wrote:Some vehicles require that you add a turn signal relay (they don't put them in unless you buy the tow package). Like the heavy duty flasher CedarRiver mentions. They are relatively inexpensive & just plug in. Google it for your vehicle or visit you local auto parts store for help.


That's why I asked if it doe's this ONLY with the trailer hooked up? I bet this will fix it.
My Tinny is a tool, a means to an end, if you will.

New River Smallies

Case Plastics Pro Staff

User avatar
JGibson
Posts: 237
Joined: 13 Jul 2012, 17:46
Location: East TN

Trailer Light Help Needed

Post by JGibson » 23 Jun 2018, 09:52

Gone to get a new flasher. Gonna check all of my grounds again too. I'll let ya know something in a few
1979 Monark 1443, 1969 Johnson 18Hp Motor

User avatar
JGibson
Posts: 237
Joined: 13 Jul 2012, 17:46
Location: East TN

Trailer Light Help Needed

Post by JGibson » 23 Jun 2018, 12:12

New flasher worked. Thanks for the input guys, very much appreciated.
1979 Monark 1443, 1969 Johnson 18Hp Motor

Post Reply